topic Re: How to Create a .PAT file for custom hatches? in AutoCAD LT Forum

How to Create a .PAT file for custom hatches?

Anonymous — Wed, 07 Jul 2021 14:21:54 GMT

Hi, I am trying to create a custom hatch. I made the hatch in a autocad drawing, made it into a block, and saved it as 6x18subwaytile.PAT

It is not showing up as a .PAT file in my files. I also am not sure how to add this into AutoCAD to use.

Re: How to Create a .PAT file for custom hatches?

Edwin.Rense — Fri, 09 Jul 2021 12:27:51 GMT

As you can see (from your attachment), your file extention is still dwg.

It should be a regular .pat

A .Pat file contains The placement of the lines (start, end and direction)

Also the pattern start coordinates.

take a look at the Acadlt.pat in the %appdata%\Autodesk\AutoCAD LT 2022\R28\enu\Support folder.

Open it in notepad.

All you see is 'text'

Look for the lines which represent the AR-B816 hatch, this is an 8"x 16" tile.

*AR-B816, 8x16 Block elevation stretcher bond
0, 0,0, 0,8 -> Is horizontal line
90, 0,0, 8,8, 8,-8 -> vertical lines

Copy these 3 lines beneath the "User defined Hatch pattern section.

Your subway tile is 6"x18",

Change to:

*SUBWAY616, 6x16 Subway Tile
0, 0,0, 0,6
90, 0,0, 6,6, 6,-6

Save the pat file.

Open AutoCAD and apply the hatch.

Re: How to Create a .PAT file for custom hatches?

steven-g — Fri, 09 Jul 2021 14:43:56 GMT

Take a look at this site.

A hatch pattern .pat file does not use a block it is a text description telling Autocad how you want the pattern to be drawn. In your case the .pat file should read

*6x18, Tile 0,0,0,0,6 90,0,0,6,9,6,-6

Re: How to Create a .PAT file for custom hatches?

steven-g — Fri, 09 Jul 2021 14:48:26 GMT

@Edwin.Rense wrote:

Copy these 3 lines beneath the "User defined Hatch pattern section.

Your subway tile is 6"x18",

Change to:

*SUBWAY616, 6x16 Subway Tile
0, 0,0, 0,6
90, 0,0, 6,6, 6,-6

Save the pat file.

Open AutoCAD and apply the hatch.

Slightly confusing

you talk about a 6x18 pattern

label it as 6x16

and it creates 6x12 😀

Re: How to Create a .PAT file for custom hatches?

Edwin.Rense — Fri, 09 Jul 2021 14:57:13 GMT

You are completely correct, changing back and forth from imperial to metric still is confusing. 😎

Yours will work better:

*6x18, Tile

0,0,0,0,6

90,0,0,6,9,6,-6

Re: How to Create a .PAT file for custom hatches?

pullstackautocad — Tue, 13 Aug 2024 18:54:15 GMT

Namaste from nepal can you please help me with the section....

pullstackautocad — Tue, 13 Aug 2024 18:55:48 GMT

Namaste from nepal can you please help me with the section....

Re: Namaste from nepal can you please help me with the section....

doni49 — Mon, 26 Aug 2024 18:49:31 GMT

Rather than bringing up an old thread to request advice, it's usually a better idea to start a NEW thread in which you reference (by way of a link) the old thread. For better or worse, a lot of people tend to pass right on by old threads. Others specifically use the "UNANSWERED" tab above as a means to find threads in which they might assist someone -- that specifically filters for threads with ZERO replies. If your post is a reply to someone else's thread, then that thread will be filtered out.

When you post a new thread, you have a better chance of getting more eyes on the question. That equates to a broader range of knowledge which in turn leads to improved chances of resolving your issue.

Re: Namaste from nepal can you please help me with the section....

Edwin.Rense — Tue, 27 Aug 2024 14:01:44 GMT

@pullstackautocad

I had an entire message ready but it didn't upload.
So a shorter one now.

Due to the equal X and Y coordinates bottom and left, and the same for top and right, this hatch is not possible.

The blue squares need an offset from bottom and left to create a single hatch.
If the color need to be different you must use two seperate hatches.

With the offset the pattern would be this:

The pattern file lines would be:

*1100x1100, Tile
0, 55,55, 1210,1210, 1100,-110
90, 55,55, 1210,1210, 1100,-110
0, 55,1155, 1210,1210, 1100,-110
90, 1155,55, 0,1210, 1100,-110
0, 0,1210, 1210,1210
90, 1210,0, 1210,1210

Hope this works for you.

Re: Namaste from nepal can you please help me with the section....

kostastomp — Thu, 25 Jun 2026 06:30:12 GMT

Hi, I am trying to recreate your hatch but it won't generate. Could you please share the pat file?
And also if possible the DWG file so that I can check the units and measurement variable
Thanks

Re: How to Create a .PAT file for custom hatches?

h_s_walker — Thu, 25 Jun 2026 14:47:48 GMT

@kostastomp If you have copied @Edwin.Rense data into a .pat file, you need to make sure there is a hard return after the line 90, 1210,0, 1210,1210

Re: How to Create a .PAT file for custom hatches?

kostastomp — Thu, 25 Jun 2026 15:18:48 GMT

Yes thank you, it tool me a while to realise that.